25403455 has 16 divisors (see below), whose sum is σ = 38006784. Its totient is φ = 15835680.

The previous prime is 25403407. The next prime is 25403461. The reversal of 25403455 is 55430452.

It is not a de Polignac number, because 25403455 - 2⁷ = 25403327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32607 + ... + 33376.

It is an arithmetic number, because the mean of its divisors is an integer number (2375424).

Almost surely, 2^25403455 is an apocalyptic number.

25403455 is a deficient number, since it is larger than the sum of its proper divisors (12603329).

25403455 is a wasteful number, since it uses less digits than its factorization.

25403455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66006.

The product of its (nonzero) digits is 12000, while the sum is 28.

The square root of 25403455 is about 5040.1840244182. The cubic root of 25403455 is about 293.9663334735.

It can be divided in two parts, 2540 and 3455, that added together give a palindrome (5995).

The spelling of 25403455 in words is "twenty-five million, four hundred three thousand, four hundred fifty-five".