25285411501 has 4 divisors (see below), whose sum is σ = 28897613152. Its totient is φ = 21673209852.

The previous prime is 25285411457. The next prime is 25285411507. The reversal of 25285411501 is 10511458252.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 25285411501 - 2¹³ = 25285403309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25285411507) 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, 1806100815 + ... + 1806100828.

It is an arithmetic number, because the mean of its divisors is an integer number (7224403288).

Almost surely, 2^25285411501 is an apocalyptic number.

It is an amenable number.

25285411501 is a deficient number, since it is larger than the sum of its proper divisors (3612201651).

25285411501 is an equidigital number, since it uses as much as digits as its factorization.

25285411501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3612201650.

The product of its (nonzero) digits is 16000, while the sum is 34.

Adding to 25285411501 its reverse (10511458252), we get a palindrome (35796869753).

The spelling of 25285411501 in words is "twenty-five billion, two hundred eighty-five million, four hundred eleven thousand, five hundred one".