25223478 has 32 divisors (see below), whose sum is σ = 61046784. Its totient is φ = 6782592.

The previous prime is 25223477. The next prime is 25223483. The reversal of 25223478 is 87432252.

It is a super-3 number, since 3×25223478³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25223477) 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, 16950 + ... + 18377.

It is an arithmetic number, because the mean of its divisors is an integer number (1907712).

Almost surely, 2^25223478 is an apocalyptic number.

25223478 is an abundant number, since it is smaller than the sum of its proper divisors (35823306).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25223478 is a wasteful number, since it uses less digits than its factorization.

25223478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35356.

The product of its digits is 26880, while the sum is 33.

The square root of 25223478 is about 5022.2980795648. The cubic root of 25223478 is about 293.2704620191.

The spelling of 25223478 in words is "twenty-five million, two hundred twenty-three thousand, four hundred seventy-eight".