625761431 has 4 divisors (see below), whose sum is σ = 639075552. Its totient is φ = 612447312.

The previous prime is 625761421. The next prime is 625761463. The reversal of 625761431 is 134167526.

625761431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 625761431 - 2¹⁴ = 625745047 is a prime.

It is a super-2 number, since 2×625761431² = 783154737054335522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 625761391 and 625761400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (625761421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6656990 + ... + 6657083.

It is an arithmetic number, because the mean of its divisors is an integer number (159768888).

Almost surely, 2^625761431 is an apocalyptic number.

625761431 is a deficient number, since it is larger than the sum of its proper divisors (13314121).

625761431 is a wasteful number, since it uses less digits than its factorization.

625761431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13314120.

The product of its digits is 30240, while the sum is 35.

The square root of 625761431 is about 25015.2239846059. The cubic root of 625761431 is about 855.3350400859.

The spelling of 625761431 in words is "six hundred twenty-five million, seven hundred sixty-one thousand, four hundred thirty-one".