25000133650 has 24 divisors (see below), whose sum is σ = 46538198820. Its totient is φ = 9991892160.

The previous prime is 25000133623. The next prime is 25000133657. The reversal of 25000133650 is 5633100052.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 18908175049 + 6091958601 = 137507^2 + 78051^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (25000133657) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 141969 + ... + 264868.

Almost surely, 2^25000133650 is an apocalyptic number.

25000133650 is a deficient number, since it is larger than the sum of its proper divisors (21538065170).

25000133650 is a wasteful number, since it uses less digits than its factorization.

25000133650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408078 (or 408073 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 25.

The spelling of 25000133650 in words is "twenty-five billion, one hundred thirty-three thousand, six hundred fifty".