25972146 has 24 divisors (see below), whose sum is σ = 56775420. Its totient is φ = 8580768.

The previous prime is 25972123. The next prime is 25972189. The reversal of 25972146 is 64127952.

25972146 is a `hidden beast` number, since 2 + 597 + 21 + 46 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1022121 + 24950025 = 1011^2 + 4995^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 25972146.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 229786 + ... + 229898.

Almost surely, 2^25972146 is an apocalyptic number.

25972146 is an abundant number, since it is smaller than the sum of its proper divisors (30803274).

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

25972146 is an frugal number, since it uses more digits than its factorization.

25972146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347 (or 118 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 25972146 is about 5096.2874722684. The cubic root of 25972146 is about 296.1437775456.

The spelling of 25972146 in words is "twenty-five million, nine hundred seventy-two thousand, one hundred forty-six".