1625411101 has 4 divisors (see below), whose sum is σ = 1626363900. Its totient is φ = 1624458304.

The previous prime is 1625411083. The next prime is 1625411129. The reversal of 1625411101 is 1011145261.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 198838201 + 1426572900 = 14101^2 + 37770^2 .

It is a cyclic number.

It is not a de Polignac number, because 1625411101 - 2⁷ = 1625410973 is a prime.

It is a super-2 number, since 2×1625411101² = 5283922494508064402, 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 (1625411141) 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, 473836 + ... + 477253.

It is an arithmetic number, because the mean of its divisors is an integer number (406590975).

Almost surely, 2^1625411101 is an apocalyptic number.

It is an amenable number.

1625411101 is a deficient number, since it is larger than the sum of its proper divisors (952799).

1625411101 is an equidigital number, since it uses as much as digits as its factorization.

1625411101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 952798.

The product of its (nonzero) digits is 240, while the sum is 22.

The square root of 1625411101 is about 40316.3874993780. The cubic root of 1625411101 is about 1175.7664776592.

Adding to 1625411101 its reverse (1011145261), we get a palindrome (2636556362).

The spelling of 1625411101 in words is "one billion, six hundred twenty-five million, four hundred eleven thousand, one hundred one".