25366349540 has 48 divisors (see below), whose sum is σ = 62843096064. Its totient is φ = 8416483200.

The previous prime is 25366349537. The next prime is 25366349543. The reversal of 25366349540 is 4594366352.

It is an interprime number because it is at equal distance from previous prime (25366349537) and next prime (25366349543).

It is not an unprimeable number, because it can be changed into a prime (25366349543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2918051 + ... + 2926730.

It is an arithmetic number, because the mean of its divisors is an integer number (1309231168).

Almost surely, 2^25366349540 is an apocalyptic number.

25366349540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25366349540 is an abundant number, since it is smaller than the sum of its proper divisors (37476746524).

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

25366349540 is a wasteful number, since it uses less digits than its factorization.

25366349540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5844828 (or 5844826 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 47.

The spelling of 25366349540 in words is "twenty-five billion, three hundred sixty-six million, three hundred forty-nine thousand, five hundred forty".