25940145 has 64 divisors (see below), whose sum is σ = 53231616. Its totient is φ = 10471680.

The previous prime is 25940107. The next prime is 25940179. The reversal of 25940145 is 54104952.

25940145 = T₄₃ + T₄₄ + ... + T₅₃₇.

It is not a de Polignac number, because 25940145 - 2⁶ = 25940081 is a prime.

It is a super-2 number, since 2×25940145² = 1345782245242050, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 42432 + ... + 43038.

It is an arithmetic number, because the mean of its divisors is an integer number (831744).

Almost surely, 2^25940145 is an apocalyptic number.

It is an amenable number.

25940145 is an abundant number, since it is smaller than the sum of its proper divisors (27291471).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25940145 is a wasteful number, since it uses less digits than its factorization.

25940145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 25940145 is about 5093.1468661330. The cubic root of 25940145 is about 296.0220985754.

It can be divided in two parts, 259 and 40145, that added together give a palindrome (40404).

The spelling of 25940145 in words is "twenty-five million, nine hundred forty thousand, one hundred forty-five".