1965247425 has 72 divisors (see below), whose sum is σ = 3784460160. Its totient is φ = 971740800.

The previous prime is 1965247409. The next prime is 1965247429. The reversal of 1965247425 is 5247425691.

It is not a de Polignac number, because 1965247425 - 2⁴ = 1965247409 is a prime.

It is a super-3 number, since 3×1965247425³ (a number of 29 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (1965247429) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 196035 + ... + 205815.

Almost surely, 2^1965247425 is an apocalyptic number.

1965247425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1965247425 is a deficient number, since it is larger than the sum of its proper divisors (1819212735).

1965247425 is a wasteful number, since it uses less digits than its factorization.

1965247425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9863 (or 9855 counting only the distinct ones).

The product of its digits is 604800, while the sum is 45.

The square root of 1965247425 is about 44331.1112538362. Note that the first 3 decimals coincide. The cubic root of 1965247425 is about 1252.5807853041.

The spelling of 1965247425 in words is "one billion, nine hundred sixty-five million, two hundred forty-seven thousand, four hundred twenty-five".