625109136 has 40 divisors (see below), whose sum is σ = 1645341120. Its totient is φ = 204437376.

The previous prime is 625109059. The next prime is 625109137. The reversal of 625109136 is 631901526.

It is a happy number.

It is a super-2 number, since 2×625109136² = 781522863821332992, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 625109097 and 625109106.

It is not an unprimeable number, because it can be changed into a prime (625109137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120316 + ... + 125403.

It is an arithmetic number, because the mean of its divisors is an integer number (41133528).

Almost surely, 2^625109136 is an apocalyptic number.

It is an amenable number.

625109136 is an abundant number, since it is smaller than the sum of its proper divisors (1020231984).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

625109136 is a wasteful number, since it uses less digits than its factorization.

625109136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245783 (or 245777 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 625109136 is about 25002.1826247230. The cubic root of 625109136 is about 855.0377357580.

The spelling of 625109136 in words is "six hundred twenty-five million, one hundred nine thousand, one hundred thirty-six".