25970621 has 8 divisors (see below), whose sum is σ = 26295360. Its totient is φ = 25648128.

The previous prime is 25970603. The next prime is 25970629. The reversal of 25970621 is 12607952.

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 25970621 - 2⁶ = 25970557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25970629) 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, 35360 + ... + 36086.

It is an arithmetic number, because the mean of its divisors is an integer number (3286920).

Almost surely, 2^25970621 is an apocalyptic number.

It is an amenable number.

25970621 is a deficient number, since it is larger than the sum of its proper divisors (324739).

25970621 is a wasteful number, since it uses less digits than its factorization.

25970621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1123.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 25970621 is about 5096.1378513537. The cubic root of 25970621 is about 296.1379812321.

The spelling of 25970621 in words is "twenty-five million, nine hundred seventy thousand, six hundred twenty-one".