25033540540 has 24 divisors (see below), whose sum is σ = 53235887040. Its totient is φ = 9886663488.

The previous prime is 25033540529. The next prime is 25033540547. The reversal of 25033540540 is 4504533052.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25033540547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7920427 + ... + 7923586.

It is an arithmetic number, because the mean of its divisors is an integer number (2218161960).

Almost surely, 2^25033540540 is an apocalyptic number.

25033540540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25033540540 is an abundant number, since it is smaller than the sum of its proper divisors (28202346500).

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

25033540540 is a wasteful number, since it uses less digits than its factorization.

25033540540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15844101 (or 15844099 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 31.

The spelling of 25033540540 in words is "twenty-five billion, thirty-three million, five hundred forty thousand, five hundred forty".