625400 has 48 divisors (see below), whose sum is σ = 1506600. Its totient is φ = 241280.

The previous prime is 625397. The next prime is 625409. The reversal of 625400 is 4526.

625400 = 146² + 147² + ... + 170².

625400 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 2×625400² = 782250320000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (625409) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10571 + ... + 10629.

2⁶²⁵⁴⁰⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 625400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (753300).

625400 is an abundant number, since it is smaller than the sum of its proper divisors (881200).

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

625400 is a wasteful number, since it uses less digits than its factorization.

625400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128 (or 119 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 625400 is about 790.8223567907. The cubic root of 625400 is about 85.5170331875.

Adding to 625400 its reverse (4526), we get a palindrome (629926).

It can be divided in two parts, 625 and 400, that multiplied together give a square (250000 = 500²).

The spelling of 625400 in words is "six hundred twenty-five thousand, four hundred".