25272621 has 16 divisors (see below), whose sum is σ = 40845120. Its totient is φ = 15316560.

The previous prime is 25272617. The next prime is 25272629. The reversal of 25272621 is 12627252.

It is not a de Polignac number, because 25272621 - 2² = 25272617 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25272629) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42250 + ... + 42843.

It is an arithmetic number, because the mean of its divisors is an integer number (2552820).

Almost surely, 2^25272621 is an apocalyptic number.

It is an amenable number.

25272621 is a deficient number, since it is larger than the sum of its proper divisors (15572499).

25272621 is a wasteful number, since it uses less digits than its factorization.

25272621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85113 (or 85107 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 25272621 is about 5027.1881802853. The cubic root of 25272621 is about 293.4607984543.

Adding to 25272621 its reverse (12627252), we get a palindrome (37899873).

The spelling of 25272621 in words is "twenty-five million, two hundred seventy-two thousand, six hundred twenty-one".