625413540 has 24 divisors (see below), whose sum is σ = 1751158080. Its totient is φ = 166776928.

The previous prime is 625413517. The next prime is 625413587. The reversal of 625413540 is 45314526.

It is a super-2 number, since 2×625413540² = 782284192030663200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 625413498 and 625413507.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5211720 + ... + 5211839.

It is an arithmetic number, because the mean of its divisors is an integer number (72964920).

Almost surely, 2^625413540 is an apocalyptic number.

625413540 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

625413540 is an abundant number, since it is smaller than the sum of its proper divisors (1125744540).

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

625413540 is a wasteful number, since it uses less digits than its factorization.

625413540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10423571 (or 10423569 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 625413540 is about 25008.2694323298. The cubic root of 625413540 is about 855.1765033508.

The spelling of 625413540 in words is "six hundred twenty-five million, four hundred thirteen thousand, five hundred forty".