25150849920 has 1024 divisors, whose sum is σ = 109842739200. Its totient is φ = 5374771200.

The previous prime is 25150849901. The next prime is 25150849921. The reversal of 25150849920 is 2994805152.

It is a happy number.

25150849920 is a `hidden beast` number, since 2 + 5 + 150 + 8 + 499 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25150849921) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 166561845 + ... + 166561995.

It is an arithmetic number, because the mean of its divisors is an integer number (107268300).

Almost surely, 2^25150849920 is an apocalyptic number.

25150849920 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 25150849920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54921369600).

25150849920 is an abundant number, since it is smaller than the sum of its proper divisors (84691889280).

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

25150849920 is an equidigital number, since it uses as much as digits as its factorization.

25150849920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215 (or 185 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The spelling of 25150849920 in words is "twenty-five billion, one hundred fifty million, eight hundred forty-nine thousand, nine hundred twenty".