25551273 has 16 divisors (see below), whose sum is σ = 37251072. Its totient is φ = 15450000.

The previous prime is 25551271. The next prime is 25551287. The reversal of 25551273 is 37215552.

It is not a de Polignac number, because 25551273 - 2¹ = 25551271 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25551273.

It is not an unprimeable number, because it can be changed into a prime (25551271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24268 + ... + 25298.

It is an arithmetic number, because the mean of its divisors is an integer number (2328192).

Almost surely, 2^25551273 is an apocalyptic number.

It is an amenable number.

25551273 is a deficient number, since it is larger than the sum of its proper divisors (11699799).

25551273 is a wasteful number, since it uses less digits than its factorization.

25551273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1796.

The product of its digits is 10500, while the sum is 30.

The square root of 25551273 is about 5054.8267032610. The cubic root of 25551273 is about 294.5354096646.

It can be divided in two parts, 2555 and 1273, that added together give a triangular number (3828 = T₈₇).

The spelling of 25551273 in words is "twenty-five million, five hundred fifty-one thousand, two hundred seventy-three".