25405022012503 has 32 divisors (see below), whose sum is σ = 31734688370688. Its totient is φ = 19833189465600.

The previous prime is 25405022012479. The next prime is 25405022012527. The reversal of 25405022012503 is 30521022050452.

It is an interprime number because it is at equal distance from previous prime (25405022012479) and next prime (25405022012527).

It is not a de Polignac number, because 25405022012503 - 2⁹ = 25405022011991 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25405022012533) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 233905776 + ... + 234014362.

It is an arithmetic number, because the mean of its divisors is an integer number (991709011584).

Almost surely, 2^{25405022012503} is an apocalyptic number.

25405022012503 is a deficient number, since it is larger than the sum of its proper divisors (6329666358185).

25405022012503 is a wasteful number, since it uses less digits than its factorization.

25405022012503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172063.

The product of its (nonzero) digits is 24000, while the sum is 31.

Adding to 25405022012503 its reverse (30521022050452), we get a palindrome (55926044062955).

The spelling of 25405022012503 in words is "twenty-five trillion, four hundred five billion, twenty-two million, twelve thousand, five hundred three".