20311413025 has 12 divisors (see below), whose sum is σ = 25203821500. Its totient is φ = 16237730880.

The previous prime is 20311412951. The next prime is 20311413029. The reversal of 20311413025 is 52031411302.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 5075707536 + 15235705489 = 71244^2 + 123433^2 .

It is not a de Polignac number, because 20311413025 - 2²⁵ = 20277858593 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20311412987 and 20311413005.

It is not an unprimeable number, because it can be changed into a prime (20311413029) 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, 248550 + ... + 319999.

Almost surely, 2^20311413025 is an apocalyptic number.

20311413025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20311413025 is a deficient number, since it is larger than the sum of its proper divisors (4892408475).

20311413025 is a wasteful number, since it uses less digits than its factorization.

20311413025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569988 (or 569983 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

Adding to 20311413025 its reverse (52031411302), we get a palindrome (72342824327).

The spelling of 20311413025 in words is "twenty billion, three hundred eleven million, four hundred thirteen thousand, twenty-five".