25401613363 has 4 divisors (see below), whose sum is σ = 29030415280. Its totient is φ = 21772811448.

The previous prime is 25401613357. The next prime is 25401613381. The reversal of 25401613363 is 36331610452.

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

It is a cyclic number.

It is not a de Polignac number, because 25401613363 - 2⁹ = 25401612851 is a prime.

It is a super-2 number, since 2×25401613363² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25401613313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1814400948 + ... + 1814400961.

It is an arithmetic number, because the mean of its divisors is an integer number (7257603820).

Almost surely, 2^25401613363 is an apocalyptic number.

25401613363 is a deficient number, since it is larger than the sum of its proper divisors (3628801917).

25401613363 is an equidigital number, since it uses as much as digits as its factorization.

25401613363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3628801916.

The product of its (nonzero) digits is 38880, while the sum is 34.

The spelling of 25401613363 in words is "twenty-five billion, four hundred one million, six hundred thirteen thousand, three hundred sixty-three".