25225155 has 32 divisors (see below), whose sum is σ = 45619200. Its totient is φ = 13221216.

The previous prime is 25225153. The next prime is 25225169. The reversal of 25225155 is 55152252.

It is not a de Polignac number, because 25225155 - 2¹ = 25225153 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25225153) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6382 + ... + 9548.

It is an arithmetic number, because the mean of its divisors is an integer number (1425600).

Almost surely, 2^25225155 is an apocalyptic number.

25225155 is a deficient number, since it is larger than the sum of its proper divisors (20394045).

25225155 is a wasteful number, since it uses less digits than its factorization.

25225155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3240 (or 3234 counting only the distinct ones).

The product of its digits is 5000, while the sum is 27.

The square root of 25225155 is about 5022.4650322327. The cubic root of 25225155 is about 293.2769613034.

The spelling of 25225155 in words is "twenty-five million, two hundred twenty-five thousand, one hundred fifty-five".