25434901 has 4 divisors (see below), whose sum is σ = 26773600. Its totient is φ = 24096204.

The previous prime is 25434881. The next prime is 25434917. The reversal of 25434901 is 10943452.

25434901 = 1148² + 1149² + ... + 1166².

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25434901 is a prime.

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

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25434901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25434961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 669321 + ... + 669358.

It is an arithmetic number, because the mean of its divisors is an integer number (6693400).

Almost surely, 2^25434901 is an apocalyptic number.

It is an amenable number.

25434901 is a deficient number, since it is larger than the sum of its proper divisors (1338699).

25434901 is a wasteful number, since it uses less digits than its factorization.

25434901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1338698.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 25434901 is about 5043.3025885822. The cubic root of 25434901 is about 294.0875801523.

It can be divided in two parts, 25434 and 901, that added together give a triangular number (26335 = T₂₂₉).

The spelling of 25434901 in words is "twenty-five million, four hundred thirty-four thousand, nine hundred one".