25415152620 has 192 divisors, whose sum is σ = 83710126080. Its totient is φ = 5680051200.

The previous prime is 25415152613. The next prime is 25415152639. The reversal of 25415152620 is 2625151452.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9513885 + ... + 9516555.

It is an arithmetic number, because the mean of its divisors is an integer number (435990240).

Almost surely, 2^25415152620 is an apocalyptic number.

25415152620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25415152620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41855063040).

25415152620 is an abundant number, since it is smaller than the sum of its proper divisors (58294973460).

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

25415152620 is a wasteful number, since it uses less digits than its factorization.

25415152620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3816 (or 3814 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 33.

The spelling of 25415152620 in words is "twenty-five billion, four hundred fifteen million, one hundred fifty-two thousand, six hundred twenty".