625520415 has 64 divisors (see below), whose sum is σ = 1111283712. Its totient is φ = 298521600.

The previous prime is 625520411. The next prime is 625520417. The reversal of 625520415 is 514025526.

It is not a de Polignac number, because 625520415 - 2² = 625520411 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (625520411) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1200355 + ... + 1200875.

It is an arithmetic number, because the mean of its divisors is an integer number (17363808).

Almost surely, 2^625520415 is an apocalyptic number.

625520415 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

625520415 is a deficient number, since it is larger than the sum of its proper divisors (485763297).

625520415 is a wasteful number, since it uses less digits than its factorization.

625520415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 720.

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 625520415 is about 25010.4061342474. The cubic root of 625520415 is about 855.2252134054.

The spelling of 625520415 in words is "six hundred twenty-five million, five hundred twenty thousand, four hundred fifteen".