120625649 has 4 divisors (see below), whose sum is σ = 123567780. Its totient is φ = 117683520.

The previous prime is 120625601. The next prime is 120625691. The reversal of 120625649 is 946526021.

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 15460624 + 105165025 = 3932^2 + 10255^2 .

It is a cyclic number.

It is not a de Polignac number, because 120625649 - 2¹⁶ = 120560113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120625949) 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, 1471004 + ... + 1471085.

It is an arithmetic number, because the mean of its divisors is an integer number (30891945).

Almost surely, 2^120625649 is an apocalyptic number.

It is an amenable number.

120625649 is a deficient number, since it is larger than the sum of its proper divisors (2942131).

120625649 is an equidigital number, since it uses as much as digits as its factorization.

120625649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2942130.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 120625649 is about 10982.9708640240. The cubic root of 120625649 is about 494.0981422476.

The spelling of 120625649 in words is "one hundred twenty million, six hundred twenty-five thousand, six hundred forty-nine".