25274145 has 64 divisors (see below), whose sum is σ = 46577664. Its totient is φ = 11612160.

The previous prime is 25274141. The next prime is 25274147. The reversal of 25274145 is 54147252.

It is not a de Polignac number, because 25274145 - 2² = 25274141 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25274141) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 223609 + ... + 223721.

It is an arithmetic number, because the mean of its divisors is an integer number (727776).

Almost surely, 2^25274145 is an apocalyptic number.

It is an amenable number.

25274145 is a deficient number, since it is larger than the sum of its proper divisors (21303519).

25274145 is a wasteful number, since it uses less digits than its factorization.

25274145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202.

The product of its digits is 11200, while the sum is 30.

The square root of 25274145 is about 5027.3397537863. The cubic root of 25274145 is about 293.4666971337.

It can be divided in two parts, 25 and 274145, that added together give a triangular number (274170 = T₇₄₀).

The spelling of 25274145 in words is "twenty-five million, two hundred seventy-four thousand, one hundred forty-five".