25274139 has 16 divisors (see below), whose sum is σ = 37131264. Its totient is φ = 15164000.

The previous prime is 25274101. The next prime is 25274141. The reversal of 25274139 is 93147252.

It is a cyclic number.

It is not a de Polignac number, because 25274139 - 2²⁰ = 24225563 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (25274339) 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, 459 + ... + 7124.

It is an arithmetic number, because the mean of its divisors is an integer number (2320704).

Almost surely, 2^25274139 is an apocalyptic number.

25274139 is a deficient number, since it is larger than the sum of its proper divisors (11857125).

25274139 is a wasteful number, since it uses less digits than its factorization.

25274139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7698.

The product of its digits is 15120, while the sum is 33.

The square root of 25274139 is about 5027.3391570492. The cubic root of 25274139 is about 293.4666739110.

It can be divided in two parts, 2527 and 4139, that added together give a palindrome (6666).

The spelling of 25274139 in words is "twenty-five million, two hundred seventy-four thousand, one hundred thirty-nine".