1425656465 has 8 divisors (see below), whose sum is σ = 1811422440. Its totient is φ = 1073435392.

The previous prime is 1425656459. The next prime is 1425656513. The reversal of 1425656465 is 5646565241.

It can be written as a sum of positive squares in 4 ways, for example, as 251634769 + 1174021696 = 15863^2 + 34264^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1425656465 - 2⁸ = 1425656209 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8386130 + ... + 8386299.

It is an arithmetic number, because the mean of its divisors is an integer number (226427805).

Almost surely, 2^1425656465 is an apocalyptic number.

It is an amenable number.

1425656465 is a deficient number, since it is larger than the sum of its proper divisors (385765975).

1425656465 is a wasteful number, since it uses less digits than its factorization.

1425656465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16772451.

The product of its digits is 864000, while the sum is 44.

The square root of 1425656465 is about 37757.8662665146. The cubic root of 1425656465 is about 1125.4813321393.

The spelling of 1425656465 in words is "one billion, four hundred twenty-five million, six hundred fifty-six thousand, four hundred sixty-five".