625000531 has 2 divisors, whose sum is σ = 625000532. Its totient is φ = 625000530.

The previous prime is 625000507. The next prime is 625000549. The reversal of 625000531 is 135000526.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 625000531 - 2⁷ = 625000403 is a prime.

It is a super-2 number, since 2×625000531² = 781251327500563922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (625000561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312500265 + 312500266.

It is an arithmetic number, because the mean of its divisors is an integer number (312500266).

Almost surely, 2^625000531 is an apocalyptic number.

625000531 is a deficient number, since it is larger than the sum of its proper divisors (1).

625000531 is an equidigital number, since it uses as much as digits as its factorization.

625000531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 625000531 is about 25000.0106199977. The cubic root of 625000531 is about 854.9882154709.

The spelling of 625000531 in words is "six hundred twenty-five million, five hundred thirty-one", and thus it is an aban number.