625401634 has 16 divisors (see below), whose sum is σ = 1102106880. Its totient is φ = 262406160.

The previous prime is 625401631. The next prime is 625401649. The reversal of 625401634 is 436104526.

625401634 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×625401634² = 782254407619739912, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 625401596 and 625401605.

It is not an unprimeable number, because it can be changed into a prime (625401631) 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, 1093074 + ... + 1093645.

It is an arithmetic number, because the mean of its divisors is an integer number (68881680).

Almost surely, 2^625401634 is an apocalyptic number.

625401634 is a deficient number, since it is larger than the sum of its proper divisors (476705246).

625401634 is a wasteful number, since it uses less digits than its factorization.

625401634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2186745.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 625401634 is about 25008.0313899355. The cubic root of 625401634 is about 855.1710766502.

The spelling of 625401634 in words is "six hundred twenty-five million, four hundred one thousand, six hundred thirty-four".