1251625 has 32 divisors (see below), whose sum is σ = 1797120. Its totient is φ = 864000.

The previous prime is 1251583. The next prime is 1251641. The reversal of 1251625 is 5261521.

It is a de Polignac number, because none of the positive numbers 2^k-1251625 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1251596 and 1251605.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40360 + ... + 40390.

It is an arithmetic number, because the mean of its divisors is an integer number (56160).

2^1251625 is an apocalyptic number.

It is an amenable number.

1251625 is a deficient number, since it is larger than the sum of its proper divisors (545495).

1251625 is a wasteful number, since it uses less digits than its factorization.

1251625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82 (or 72 counting only the distinct ones).

The product of its digits is 600, while the sum is 22.

The square root of 1251625 is about 1118.7604748113. The cubic root of 1251625 is about 107.7683937067.

It can be divided in two parts, 1251 and 625, that multiplied together give a triangular number (781875 = T₁₂₅₀).

The spelling of 1251625 in words is "one million, two hundred fifty-one thousand, six hundred twenty-five".