1425381306565 has 16 divisors (see below), whose sum is σ = 1756420550640. Its totient is φ = 1110048491520.

The previous prime is 1425381306541. The next prime is 1425381306581. The reversal of 1425381306565 is 5656031835241.

It can be written as a sum of positive squares in 8 ways, for example, as 427394292516 + 997987014049 = 653754^2 + 998993^2 .

It is not a de Polignac number, because 1425381306565 - 2³¹ = 1423233822917 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24060010 + ... + 24119179.

It is an arithmetic number, because the mean of its divisors is an integer number (109776284415).

Almost surely, 2^{1425381306565} is an apocalyptic number.

It is an amenable number.

1425381306565 is a deficient number, since it is larger than the sum of its proper divisors (331039244075).

1425381306565 is an equidigital number, since it uses as much as digits as its factorization.

1425381306565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48179352.

The product of its (nonzero) digits is 2592000, while the sum is 49.

The spelling of 1425381306565 in words is "one trillion, four hundred twenty-five billion, three hundred eighty-one million, three hundred six thousand, five hundred sixty-five".