25533961452 has 240 divisors, whose sum is σ = 72255062880. Its totient is φ = 7838208000.

The previous prime is 25533961447. The next prime is 25533961463. The reversal of 25533961452 is 25416933552.

25533961452 is a `hidden beast` number, since 2 + 5 + 533 + 9 + 61 + 4 + 52 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 25533961398 and 25533961407.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 36424702 + ... + 36425402.

It is an arithmetic number, because the mean of its divisors is an integer number (301062762).

Almost surely, 2^25533961452 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 25533961452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36127531440).

25533961452 is an abundant number, since it is smaller than the sum of its proper divisors (46721101428).

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

25533961452 is a wasteful number, since it uses less digits than its factorization.

25533961452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 894 (or 883 counting only the distinct ones).

The product of its digits is 972000, while the sum is 45.

The spelling of 25533961452 in words is "twenty-five billion, five hundred thirty-three million, nine hundred sixty-one thousand, four hundred fifty-two".