25026400001389 has 4 divisors (see below), whose sum is σ = 25327922893056. Its totient is φ = 24724877109724.

The previous prime is 25026400001371. The next prime is 25026400001441. The reversal of 25026400001389 is 98310000462052.

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 a cyclic number.

It is not a de Polignac number, because 25026400001389 - 2⁵ = 25026400001357 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 (25026400001689) 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, 150761445709 + ... + 150761445874.

It is an arithmetic number, because the mean of its divisors is an integer number (6331980723264).

Almost surely, 2^{25026400001389} is an apocalyptic number.

It is an amenable number.

25026400001389 is a deficient number, since it is larger than the sum of its proper divisors (301522891667).

25026400001389 is an equidigital number, since it uses as much as digits as its factorization.

25026400001389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301522891666.

The product of its (nonzero) digits is 103680, while the sum is 40.

The spelling of 25026400001389 in words is "twenty-five trillion, twenty-six billion, four hundred million, one thousand, three hundred eighty-nine".