25424454 has 32 divisors (see below), whose sum is σ = 55748736. Its totient is φ = 7665920.

The previous prime is 25424447. The next prime is 25424459. The reversal of 25424454 is 45442452.

It is a super-2 number, since 2×25424454² = 1292805722396232, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25424459) 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, 14134 + ... + 15830.

It is an arithmetic number, because the mean of its divisors is an integer number (1742148).

Almost surely, 2^25424454 is an apocalyptic number.

25424454 is an abundant number, since it is smaller than the sum of its proper divisors (30324282).

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

25424454 is a wasteful number, since it uses less digits than its factorization.

25424454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1940.

The product of its digits is 25600, while the sum is 30.

The square root of 25424454 is about 5042.2667521661. The cubic root of 25424454 is about 294.0473106334.

It can be divided in two parts, 25424 and 454, that added together give a triangular number (25878 = T₂₂₇).

The spelling of 25424454 in words is "twenty-five million, four hundred twenty-four thousand, four hundred fifty-four".