25972415 has 8 divisors (see below), whose sum is σ = 35619360. Its totient is φ = 17809632.

The previous prime is 25972391. The next prime is 25972417. The reversal of 25972415 is 51427952.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25972415 - 2¹⁰ = 25971391 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35), and also a Moran number because the ratio is a prime number: 742069 = 25972415 / (2 + 5 + 9 + 7 + 2 + 4 + 1 + 5).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25972417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 371000 + ... + 371069.

It is an arithmetic number, because the mean of its divisors is an integer number (4452420).

Almost surely, 2^25972415 is an apocalyptic number.

25972415 is a deficient number, since it is larger than the sum of its proper divisors (9646945).

25972415 is an equidigital number, since it uses as much as digits as its factorization.

25972415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 742081.

The product of its digits is 25200, while the sum is 35.

The square root of 25972415 is about 5096.3138639609. The cubic root of 25972415 is about 296.1447999538.

The spelling of 25972415 in words is "twenty-five million, nine hundred seventy-two thousand, four hundred fifteen".