1925631 has 12 divisors (see below), whose sum is σ = 2928120. Its totient is φ = 1216080.

The previous prime is 1925621. The next prime is 1925639. The reversal of 1925631 is 1365291.

1925631 is a `hidden beast` number, since 1 + 9 + 25 + 631 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-1925631 is a prime.

It is a super-2 number, since 2×1925631² = 7416109496322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1925595 and 1925604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1925639) 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, 5460 + ... + 5801.

It is an arithmetic number, because the mean of its divisors is an integer number (244010).

2^1925631 is an apocalyptic number.

1925631 is a deficient number, since it is larger than the sum of its proper divisors (1002489).

1925631 is a wasteful number, since it uses less digits than its factorization.

1925631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11286 (or 11283 counting only the distinct ones).

The product of its digits is 1620, while the sum is 27.

The square root of 1925631 is about 1387.6710705351. The cubic root of 1925631 is about 124.4106873846.

It can be divided in two parts, 1925 and 631, that added together give a triangular number (2556 = T₇₁).

The spelling of 1925631 in words is "one million, nine hundred twenty-five thousand, six hundred thirty-one".