26401401525 has 24 divisors (see below), whose sum is σ = 44176235040. Its totient is φ = 13911096640.

The previous prime is 26401401511. The next prime is 26401401571. The reversal of 26401401525 is 52510410462.

It is not a de Polignac number, because 26401401525 - 2¹¹ = 26401399477 is a prime.

It is a super-4 number, since 4×26401401525⁴ (a number of 43 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 26401401492 and 26401401501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2114370 + ... + 2126819.

It is an arithmetic number, because the mean of its divisors is an integer number (1840676460).

Almost surely, 2^26401401525 is an apocalyptic number.

26401401525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

26401401525 is a deficient number, since it is larger than the sum of its proper divisors (17774833515).

26401401525 is a wasteful number, since it uses less digits than its factorization.

26401401525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4241285 (or 4241280 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

Adding to 26401401525 its reverse (52510410462), we get a palindrome (78911811987).

The spelling of 26401401525 in words is "twenty-six billion, four hundred one million, four hundred one thousand, five hundred twenty-five".