25145020500 has 48 divisors (see below), whose sum is σ = 73222304064. Its totient is φ = 6705338400.

The previous prime is 25145020487. The next prime is 25145020531. The reversal of 25145020500 is 502054152.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8380174 + ... + 8383173.

It is an arithmetic number, because the mean of its divisors is an integer number (1525464668).

Almost surely, 2^25145020500 is an apocalyptic number.

25145020500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25145020500 is an abundant number, since it is smaller than the sum of its proper divisors (48077283564).

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

25145020500 is a wasteful number, since it uses less digits than its factorization.

25145020500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16763369 (or 16763357 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 24.

Adding to 25145020500 its reverse (502054152), we get a palindrome (25647074652).

The spelling of 25145020500 in words is "twenty-five billion, one hundred forty-five million, twenty thousand, five hundred".