25265405 has 12 divisors (see below), whose sum is σ = 33326076. Its totient is φ = 18374400.

The previous prime is 25265377. The next prime is 25265411. The reversal of 25265405 is 50456252.

It can be written as a sum of positive squares in 2 ways, for example, as 2579236 + 22686169 = 1606^2 + 4763^2 .

It is not a de Polignac number, because 25265405 - 2¹⁰ = 25264381 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 11 ways as a sum of consecutive naturals, for example, 20276 + ... + 21485.

It is an arithmetic number, because the mean of its divisors is an integer number (2777173).

Almost surely, 2^25265405 is an apocalyptic number.

It is an amenable number.

25265405 is a deficient number, since it is larger than the sum of its proper divisors (8060671).

25265405 is a wasteful number, since it uses less digits than its factorization.

25265405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41788 (or 41777 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 25265405 is about 5026.4704316250. The cubic root of 25265405 is about 293.4328655290.

The spelling of 25265405 in words is "twenty-five million, two hundred sixty-five thousand, four hundred five".