31415021425 has 12 divisors (see below), whose sum is σ = 38957100336. Its totient is φ = 25130421200.

The previous prime is 31415021419. The next prime is 31415021447. The reversal of 31415021425 is 52412051413.

It is not a de Polignac number, because 31415021425 - 2¹³ = 31415013233 is a prime.

It is a super-2 number, since 2×31415021425² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31415021393 and 31415021402.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 510570 + ... + 568780.

It is an arithmetic number, because the mean of its divisors is an integer number (3246425028).

Almost surely, 2^31415021425 is an apocalyptic number.

It is an amenable number.

31415021425 is a deficient number, since it is larger than the sum of its proper divisors (7542078911).

31415021425 is a wasteful number, since it uses less digits than its factorization.

31415021425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79808 (or 79803 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 31415021425 its reverse (52412051413), we get a palindrome (83827072838).

The spelling of 31415021425 in words is "thirty-one billion, four hundred fifteen million, twenty-one thousand, four hundred twenty-five".