25210003013 has 4 divisors (see below), whose sum is σ = 27149234028. Its totient is φ = 23270772000.

The previous prime is 25210003003. The next prime is 25210003031. The reversal of 25210003013 is 31030001252.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12100440004 + 13109563009 = 110002^2 + 114497^2 .

It is a cyclic number.

It is not a de Polignac number, because 25210003013 - 2¹⁶ = 25209937477 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 25210002982 and 25210003000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25210003003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 969615488 + ... + 969615513.

It is an arithmetic number, because the mean of its divisors is an integer number (6787308507).

Almost surely, 2^25210003013 is an apocalyptic number.

It is an amenable number.

25210003013 is a deficient number, since it is larger than the sum of its proper divisors (1939231015).

25210003013 is a wasteful number, since it uses less digits than its factorization.

25210003013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1939231014.

The product of its (nonzero) digits is 180, while the sum is 17.

Adding to 25210003013 its reverse (31030001252), we get a palindrome (56240004265).

The spelling of 25210003013 in words is "twenty-five billion, two hundred ten million, three thousand, thirteen".