25424969472 has 648 divisors, whose sum is σ = 93299606400. Its totient is φ = 6866270208.

The previous prime is 25424969443. The next prime is 25424969501. The reversal of 25424969472 is 27496942452.

25424969472 is a `hidden beast` number, since 2 + 542 + 4 + 9 + 6 + 94 + 7 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (25424969443) and next prime (25424969501).

It is a tau number, because it is divible by the number of its divisors (648).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 57915429 + ... + 57915867.

Almost surely, 2^25424969472 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25424969472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46649803200).

25424969472 is an abundant number, since it is smaller than the sum of its proper divisors (67874636928).

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

25424969472 is an equidigital number, since it uses as much as digits as its factorization.

25424969472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503 (or 470 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 54.

The spelling of 25424969472 in words is "twenty-five billion, four hundred twenty-four million, nine hundred sixty-nine thousand, four hundred seventy-two".