1401402425 has 12 divisors (see below), whose sum is σ = 1740461520. Its totient is φ = 1119365520.

The previous prime is 1401402421. The next prime is 1401402439. The reversal of 1401402425 is 5242041041.

It is not a de Polignac number, because 1401402425 - 2² = 1401402421 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1401402425.

It is not an unprimeable number, because it can be changed into a prime (1401402421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27515 + ... + 59664.

It is an arithmetic number, because the mean of its divisors is an integer number (145038460).

Almost surely, 2^1401402425 is an apocalyptic number.

It is an amenable number.

1401402425 is a deficient number, since it is larger than the sum of its proper divisors (339059095).

1401402425 is an equidigital number, since it uses as much as digits as its factorization.

1401402425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87832 (or 87827 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 1401402425 is about 37435.3098691596. The cubic root of 1401402425 is about 1119.0623596447.

Adding to 1401402425 its reverse (5242041041), we get a palindrome (6643443466).

The spelling of 1401402425 in words is "one billion, four hundred one million, four hundred two thousand, four hundred twenty-five".