3625634477 has 4 divisors (see below), whose sum is σ = 3723624636. Its totient is φ = 3527644320.

The previous prime is 3625634461. The next prime is 3625634497. The reversal of 3625634477 is 7744365263.

3625634477 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7744365263 = 47 ⋅164773729.

It can be written as a sum of positive squares in 2 ways, for example, as 3352525801 + 273108676 = 57901^2 + 16526^2 .

It is a cyclic number.

It is not a de Polignac number, because 3625634477 - 2⁴ = 3625634461 is a prime.

It is a super-2 number, since 2×3625634477² = 26290450721622127058, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3625634437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48995024 + ... + 48995097.

It is an arithmetic number, because the mean of its divisors is an integer number (930906159).

Almost surely, 2^3625634477 is an apocalyptic number.

3625634477 is a gapful number since it is divisible by the number (37) formed by its first and last digit.

It is an amenable number.

3625634477 is a deficient number, since it is larger than the sum of its proper divisors (97990159).

3625634477 is an equidigital number, since it uses as much as digits as its factorization.

3625634477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97990158.

The product of its digits is 2540160, while the sum is 47.

The square root of 3625634477 is about 60213.2417081160. The cubic root of 3625634477 is about 1536.2480312634.

The spelling of 3625634477 in words is "three billion, six hundred twenty-five million, six hundred thirty-four thousand, four hundred seventy-seven".